Insulated wall for ovens and the like



April 1, 1924. 1,488,798

. W. F. SCHALLER INSULATED WALL FOR OVENS AND THE LIKE originalv FiledJan; '2. 1921 Patented ltheir. l., 1924.

WILLIAM F. SOLER, 0F SAN FRANCISCO', CALFORNIA.

INSULATE-l) WALL FOR GVENS AND THE LIKE.

Application filed January 7, 1921, Serial No. 435,771.

To aZZ whom it may concern Be it known that l, WILLIAM F. SCHAL- LER, acitizen of the United States, residing at San Francisco, in the countyof San Francisco and State of California, have invented.l

certain new and useful Improvements in an Insulated Wall for Ovens andthe like, of which the following is a specification.

My invention relates to improvements in an insulated wall for ovens andthe like, such as furnaces and driers; and the object of my invention isto provide a wall structure that is practically a non-conductor of heat,and yet a wall of light weight and of strong and simple construction.

I attain this object by the method of construction shown in theaccompanying drawlneet the several portions of the inner layer 1, therecessed part of the strip 4 being denoted by 5. Similar recessed parts6 also are formed in the outer'layer 2. Bent Wires 7 go throughapertures in the recessed parts 5 to serve as binding means to hold thestrips 4 and the inner layer 1 to the refractory filler 3. Bent wires 8go through apertures in the recessed parts 6 to serve as binding meansto hold the outer layer 2 to the refractory filler 3. It will be noticedthat the bent Wires 7 and 8 do not touch each other, and hence by myconstruction there is no radiation of heat, due to metallic connections,from the inner layer 1 to the outer layer 2. The strips 4 are placed ina different plane to the bent recessed parts 6, preferably at ninetydegrees, to stiifen or brace the Wall.

A facing of enameled metal or other material 9 is fastened to the outerlayer, for appearances sake.

In construction, the inner layer 1 of my insulated wall is composed of atough nonconducting material, preferably asbestos board. The outer layer2 is composed of a metallic substance to give strength to the structure.The refractory ller 3 is com Renewed November 26, 1923.

posed of a layer, or several layers cemented together, of a suitablerefractory material ofl very high insulating quality as well as anon-conductor of heat. The inner layer 1 and the outer layer 2 aresecurely fastened to the refractory filler 3. The binding wires I and 8serve to fasten the inner layer 1 and the outer layer 2 to therefractory filler 3, and to eliminate radiation the Wires 7 and 8 mustnot touch each other.

Various changes may be made in the arrangement and details of myinvention without-departing from the spirit of my invention as set forthin the following claims.

Having thus described my invention, what l claim as new, and desiretosecure by Letters Patent, .is-

1. An insulated wall for ovens and the like comprising an inner layer ofnon-conducting asbestos board, an outer metallic layer, and a refractoryfiller of insulating material cemented to said inner layer and saidouter layer substantially as described.

2. An insulated wall forv ovens and the like comprising an inner layerof thin nonconducting asbestos board, an outer metallic layer, arefractory filler of insulating material cemented to said inner layerand saidv outer layer, metal binding strips to hold said inner layer andbinding wires passing through the metal strips and imbedded in therefractory filler to hold said inner layer and said refractory fillertogether, the metal and binding Wires on both sides of the wall beingprotected. by the refractory material from the transfer of heat throughthe wall.

3. An insulated wall for ovens and the like, comprising an inner layerof thin nonconducting asbestos board, an outer layer of metallicsubstance, a refractory filler of insulating material, and means to holdsaid inner layer and said outer layer substantially to said refractoryfiller, there bein no metallic communication between the sai inner layerand the said outer layer.

4. An insulated Wall for ovens and the like, comprising an inner layerof thin nonconducting asbestos board, an outer layer of metallicsubstance, a refractory filler of insulating material, said inner layerand said vouter layer being cemented to said refractory filler, andmetal binding strips to hold said inner layer to said refractory filler.

5. A n insulated wall for ovens and the like comprising an inner layerof non-con- 'E Leeeyzoe ducting asbestos boordi an outer znetaiiiccovering9 fi refractory filler of insulating motorini, ineens to iioicisaid inner Layer and said outer covering in Contact with said refractoryiiilel', the inetzii on both sides of the willi being protected from thetransfer of beat therethrough by the refiaetory filler.

6. An insuiated wail for ovens and the like, comprising en inner layerof thin noncondueting asbestos board, an outer ieyei of metaiiicsubstance., a refractory iier @finsuiating nieteiiai, metal bindingstrips inerted in the inner laye-i, U-sbapeci recessed parte bent in theouter layer, bent binding Wires passing through the said metal bindingstrips and imbedded in the iefiactory iiei' to bold said inner inyei tosaid refractory filler, and bent binding Wires passing through saidii-shaped ieeessed parte bent in the outer layer and imbedded in theseitiA ieractory iiiei to hoiti said ontei iayer to said refractoryfiller.

iin testimony whereof 1 nx my signature.

WELLAM E SCHLLLERQ

